Hmm. That might explain why optional voicing of /p/ in Tokana
is more common than optional voicing of /k/. (Tokana has only
three stops, /p/, /t/, and /k/. These are usually voiceless and
unaspirated, but they can optionally voice in certain environments,
such as after a nasal or liquid, or intervocalically before an
unstressed vowel.)
Matt.